Hydraulic excavator.



W. B. MOGHESNEY- HYDRAULIC EXGAVATOR.

APPLICATION FILED APR. 2, 1912 1,055,548, Patented Mar. 11, 1913.

3 SHEETS-$111131 1.

WITNESSES [N VEN T OR COLUMBIA PLANOGRAPH co.,wAsHINGTDN, n. c.

W. E. MoO H ESNEY.

HYDRAULIC EXGAVATOR. APPLICATION FILED APR. 2, 1912. Patented Mar. 11,1913.

a SHEETS-SHEET 2' INVENTOR WaZZaceE Q d W. .E. MQCHESNBY. HYDRAULICBXGAVATOR. APPLICATION FILED APR.2, 1912.

1 Q55 548 Patented Mar.11,1913.

3 SHEETS-SHEET 3.

W] T NESSES I 1N VEA 7 0R M QZZQwE-JF q 1 Allomey UNITED STATES PATENTOFFICE.

WALLACE E. MCCHESNEY, 0F BERKELEY, CALIFORNIA.

HYDRAULIC EXCAVATOR.

To all whom 2'25 may concern:

Be it known that I, IVALLAGE E. McCHEs- NEY, a citizen of the UnitedStates, residing at Berkeley, in the county of Alameda and State ofCalifornia, have invented certain new and useful Improvements inHydraulic Excavators; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in hydraulicexcavator appa ratus and comprises a simple and efficient mechanism ofthis nature having various details of construction and combinations andarrangements of parts which will be hereinafter fully described, shownin the accompanying drawings and then specifically defined in theappended claims.

I illustrate my invention in the accompanying drawings, in which Figure1 is a top plan view of my improved hydraulic excavator. Fig. 2 is asectional view taken on line 22 of Fig. 1. Fig. 3 is an end view of acylindrical sleeve about which the excavator rotates. Fig. 4 is adiagrammatic view showing the application of the invention. Fig. 5 is adetail in elevation showing the pivotal wheel and flexible pipe formingpart of the apparatus, and Fig. 6 is a sectional view taken on line 6-6of Fig. 1.

Reference now being had to the details of the drawings by letter, Adesignates the frame or truck of the apparatus which has parallel crossbeams B projecting therefrom upon which the diagonally disposed shafts Care journaled and a wheel C is fixed to each of said shafts and also abeveled pinion G which latter meshes with a similar beveled pinion G adetail of which is illustrated in Fig. 6 of the drawings and which has astub shaft C journaled in the bearing C and splined to said stub shaftis a hol low sleeve C having an annular groove engaged by the clutchthrowing lever C which may be held in adjusted positions by means of ahand operated pawl C The inner end of each sleeve has a beveled frictionwheel C which may be thrown into or out of en gagement with a similarfriction wheel 0 Specification of Letters Patent.

Application filed April 2, 1912.

Patented Mar. 11, 1913.

Serial No. 688,006.

mounted one upon each end of a shaft G,

which shafts are journaled in suitable bearings in the cylindricalreceptacle D, said receptacle comprising a cylindrical body with anopening D in the upper portion thereof, as illustrated in Figs. 1 and 2of the drawings.

It will be noted upon reference to Figs. 2 and 3 of the drawings thatthere are, in addition to the shafts Gr, other shafts E of similarconstruction and each having a sprocket wheel E fixed thereto and aboutwhich a sprocket chain F passes, which sprocket chain also passes abouta sprocket wheel E which is fixed to the centrally disposed shaft E Agear wheel I is fixed to the shaft D and is driven by intermeshing witha pinion I fixed to a stub shaft I and mounted in a bearing in the frameof the apparatus and which shaft I also carries a gear wheel Jinter-meshing with a pinion J mounted upon the motor shaft K. Thecentral shaft E has stirrer arms 0 projecting therefrom in spiralarrangement, as shown clearly in Fig. 1 of the drawings, which serve asmeans for stirring up the contents of the receptacle with water which issprayed therein. Mounted to rotate about one end of said receptacle D isa cylindrical excavator N which has a series of excavator scoops orplows M, shown in section in Fig. 2 of the drawings, pivotally mountedupon the shafts N suitable stops Q being provided to limit theoscillating movement of each scoop or plow, as shown. An internallytoothed ring E is fixed to the inner circumference of the excavator andis in mesh with a series of gear wheels E which are fixed one to each ofthe shafts E, G and D, each mounted within a casing E one only of whichis shown in section in Fig. 2.

Upon reference to Fig. 1 of the drawings, it will be noted that theupper portion of the cylindrical excavator has an opening thereinthrough which the soil raised by the scoops or plows is adapted to fallby gravity into the interior of the receptacle D about the end of whichthe excavator rotates. A water main It having branching pipes R isprovided for supplying water to the interior of the receptacle D for thepurpose of converting the soil into a semiplastic condition so that itmay be drawn through the pipe S by suction and conveyed to any suitablelocation. Said pipe S has a screen S over the end thereof, as shown inFig. 2 of the drawings, and a motor T provides means whereby a rotarypump mounted within the casing T may afford a suction for withdrawingthe soil in a semiplastic form and conveying the same away to bedeposited at a distance. The pipe S has a flexible oint S shown indetail in Fig. 5 of the drawings, and which is supported upon a standardS rising from the frame of the apparatus and immediately over thepivotal wheel A which latter has a rib A upon its circumference.

The operation of my apparatus will be readily understood and is asfollows :-The parts being adjusted as shown in the drawings, thedredging machine is adapted to have a swinging movement, as indicated inthe diagrammatic view, Fig. 4: of the drawings. The motor upon theapparatus serves to cause the cylindrical excavator to rotate and scoopup the soil as the frame through the gear mechanism propelled by themotor shown is given a swinging movement with a radius equivalent to thelength of the frame, the wheel A acting as a pivot, the rib thereonserving as a means to hold one end of the frame stationary as the otherend swings back and forth in describing the arc of a circle. As the soilis raised and automatically dumped into the receptacle D, it is agitatedby the arms upon the central shaft E and reduced to a semiplasticcondition by being mixed with the water which is introduced therein,after which the material reduced to I such semiplastic condition may bepumped by the suction apparatus and conveyed back and deposited at anysuitable location.

hat I claim to be new is 1. A hydraulic excavator apparatus comprising aframe, driving wheels and shafts carrying the same, said shafts beingpositioned at angles to each other, means for driving the shafts wherebythe frame may be swung laterally, a pivot wheel mounted at one end ofthe frame, a receptacle upon the latter, a pipe for introducing waterinto the receptacle, a rotatable excavator movable about the latter, aflexible suction pipe communicating with the receptacle, and means forrotating the excavator, as set forth.

2. A hydraulic excavator apparatus com prising a frame, driving wheelsand shafts carrying the same, said shafts being positioned at angles toeach other, means for driving the shafts whereby the frame may be swunglaterally, a pivot wheel mounted at one end of the frame and having acircun'iferential rib thereon, a receptacle upon the frame, a pipe forconducting Water thereto, a rotatable excavator movable about thereceptacle, and a flexible pipe communicating with the receptacle, asset forth.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

WALLACE E. MCCHESNEY.

\Vitnesses R. J. HOUGI-I, L. GoNsALvEs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

